101280620 has 48 divisors (see below), whose sum is σ = 245340480. Its totient is φ = 34401024.

The previous prime is 101280593. The next prime is 101280631. The reversal of 101280620 is 26082101.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 101280592 and 101280601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11942 + ... + 18578.

It is an arithmetic number, because the mean of its divisors is an integer number (5111260).

Almost surely, 2^101280620 is an apocalyptic number.

101280620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101280620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122670240).

101280620 is an abundant number, since it is smaller than the sum of its proper divisors (144059860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101280620 is a wasteful number, since it uses less digits than its factorization.

101280620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6762 (or 6760 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 101280620 is about 10063.8273037647. The cubic root of 101280620 is about 466.1318555819.

The spelling of 101280620 in words is "one hundred one million, two hundred eighty thousand, six hundred twenty".